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00001 /*
00002  * PROJECT:         ReactOS FAT file system driver
00003  * LICENSE:         GNU GPLv3 as published by the Free Software Foundation
00004  * FILE:            drivers/filesystems/fastfat/device.c
00005  * PURPOSE:         Device control
00006  * PROGRAMMERS:     Aleksey Bragin (aleksey@reactos.org)
00007  */
00008 
00009 /* INCLUDES *****************************************************************/
00010 
00011 #define NDEBUG
00012 #include "fastfat.h"
00013 
00014 /* FUNCTIONS ****************************************************************/
00015 
00016 NTSTATUS
00017 NTAPI
00018 FatDeviceControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
00019 {
00020     DPRINT1("FatDeviceControl()\n");
00021     return STATUS_NOT_IMPLEMENTED;
00022 }
00023 
00024 NTSTATUS
00025 FatPerformDevIoCtrl(PDEVICE_OBJECT DeviceObject,
00026                     ULONG ControlCode,
00027                     PVOID InputBuffer,
00028                     ULONG InputBufferSize,
00029                     PVOID OutputBuffer,
00030                     ULONG OutputBufferSize,
00031                     BOOLEAN Override)
00032 {
00033     PIRP Irp;
00034     KEVENT Event;
00035     NTSTATUS Status;
00036     PIO_STACK_LOCATION Stack;
00037     IO_STATUS_BLOCK IoStatus;
00038 
00039     /* Initialize the event for waiting */
00040     KeInitializeEvent(&Event, NotificationEvent, FALSE);
00041 
00042     /* Build the device I/O control request */
00043     Irp = IoBuildDeviceIoControlRequest(ControlCode,
00044                                         DeviceObject,
00045                                         InputBuffer,
00046                                         InputBufferSize,
00047                                         OutputBuffer,
00048                                         OutputBufferSize,
00049                                         FALSE,
00050                                         &Event,
00051                                         &IoStatus);
00052 
00053     /* Fail if IRP hasn't been allocated */
00054     if (!Irp) return STATUS_INSUFFICIENT_RESOURCES;
00055 
00056     /* Set verify override flag if requested */
00057     if (Override)
00058     {
00059         Stack = IoGetNextIrpStackLocation(Irp);
00060         Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
00061     }
00062 
00063     /* Call the driver */
00064     Status = IoCallDriver(DeviceObject, Irp);
00065 
00066     /* Wait if needed */
00067     if (Status == STATUS_PENDING)
00068     {
00069         KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
00070         Status = IoStatus.Status;
00071     }
00072 
00073     return Status;
00074 }
00075 
00076 /* EOF */
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